R A. If the self test gives the maintenance message:
R
R - CHECK PRESS XDCR WIRING/ECB 59KD (Ref. TASK 49-00-81-810-852),
R - DIFFERENTIAL PRESS XDCR P24 (Ref. TASK 49-00-81-810-853),
R - TOTAL PRESS XDCR P23 (Ref. TASK 49-00-81-810-854),
R - SURGE CTL VALVE P18 (Ref. TASK 49-00-81-810-871),
R - INLET GUIDE VANE ACTR P21 (Ref. TASK 49-00-81-810-851) or (Ref. TASK
R 49-00-81-810-858).
R - LOAD CTL VALVE P12 (Ref. TASK 49-00-81-810-861).
R - INLET TEMP SENSOR (Ref. TASK 49-20-00-810-803).
R - INLET OVERHEAT/CHECK APU INLET (Ref. TASK 49-00-81-810-843).
R B. If the IGV parameter values are out of range:
R - check that the EGT increase during a mode change (i.e. RTL to ECS).
R NOTE : RTL = Ready To Load
____
R (1) If the EGT does not increase:
R - remove the IGV ACTUATOR P21 (Ref. AMM TASK 49-23-51-000-004).
R - do a push/pull test on the IGVs to check the IGV movement.
R .make sure that the IGV has a travel range of 1 in. (25.3999 mm),
R .measure the force of the IGV movement.
R (a) If a force less than 20 lbf.ft (2.7116 m.daN) is necessary to
R move the IGVs:
R - replace the IGV ACTUATOR P21 (Ref. AMM TASK 49-23-51-000-004)
R and (Ref. AMM TASK 49-23-51-400-004).
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-199, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page B256
201-210, Config-1 Aug 01/05 CES
R (b) If a force more than 20 lbf.ft (2.7116 m.daN) is necessary to
R move the IGVs or the travel range is less than 1 in. (25.3999
R mm):
R - replace the APU (Ref. AMM TASK 49-11-11-000-004) and (Ref. AMM
R TASK 49-11-11-400-004).
R (2) If the EGT increases:
R - check the APU bleed system for leaks.
R C. If the WB parameter values are out of range:
R - do a check for blockage of the APU inlet.
R (1) If the fault continues:
R - do a check of the APU BLEED CHECK-VALVE (7260HM) (Ref. AMM TASK 36-R 12-51-200-001).
R (a) If the inspection of the APU BLEED CHECK-VALVE (7260HM) is not
R OK:
R - replace the APU BLEED CHECK-VALVE (7260HM) (Ref. AMM TASK 36-R 12-51-000-001) and (Ref. AMM TASK 36-12-51-400-001).
R (b) If the inspection of the APU BLEED CHECK-VALVE (7260HM) is OK:
R - do a check for damage/contamination of the DIFFERENTIAL
R PRESSURE TRANSDUCER (P24) and TOTAL PRESSURE TRANSDCER (P23)
R - remove the tube of the tube of the DIFFERENTIAL PRESSURE
R TRANSDUCER (P24) (Ref. AMM TASK 49-51-16-000-002).
R - remove the tube of the tube of the TOTAL PRESSURE TRANSDUCER
R (P23) (Ref. AMM TASK 49-51-17-000-002).
R - put plugs in the openings.
R NOTE : It is recommended to use a pressure of 60-90 psig
____ R (4.14-6.20 bar) of filtered air or nitrogen to blow the R air through the tubes.
R - use a air source to remove unwanted materials out of the tubes.
R - remove the plugs from the openings.
R - install the tube of the DIFFERENTIAL PRESSURE TRANSDUCER (P24)
R (Ref. AMM TASK 49-51-16-400-002).
R - install the tube of the TOTAL PRESSURE TRANSDUCER (P23) (Ref.
R AMM TASK 49-51-17-400-002).
R (c) If the fault continues:
R - replace the DIFFERENTIAL PRESSURE TRANSDUCER (P24)
R (Ref. AMM TASK 49-51-16-000-002) and (Ref. AMM TASK 49-51-16-R 400-002).
R - replace the TOTAL PRESSURE TRANSDUCER (P23)
R (Ref. AMM TASK 49-51-17-000-002) and (Ref. AMM TASK 49-51-17-R 400-002).
R (d) If the fault continues:
R - do a check of damage/leakage of the fuel supply and return
R lines of the SCV
「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-154, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page B257
201-207, Config-1 Aug 01/05 CES 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1R EFF : 001-049, 101-105, 107-107, 151-154, ∞∞49-00-81∞∞∞∞∞∞∞∞∞∞Page B258
R 1_ If there is damaged/leaking in the fuel supply and return
R lines:
R - do a repair.
R 2_ If the fuel supply and return lines are OK:
R - replace the SURGE CONTROL VALVE (P18)
R (Ref. AMM TASK 49-51-52-000-003) and (Ref. AMM TASK 49-51-
R 52-400-003).
R (e) If the fault continues:
R - replace the ECB (59KD)
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